How do we know that there will be a rapture?

The concept of the rapture, understood as being 'caught up' with the Lord, is especially noted in 1 Thessalonians 4:17. This passage assures believers that those who are alive at Christ's return will not only witness this glorious event but also be transformed in a moment. The rapture emphasizes the hope of believers being united with the Lord and with other saints, forming a significant part of the Christian eschatological hope. This biblical truth is meant to comfort and encourage believers to remain steadfast in faith.